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Articles by H. Onder
Total Records ( 2 ) for H. Onder
  H. Onder , M. Akif Cam and E. Soydan
  This study is carried out to automate the small ruminant (sheep and goat) records and to use these records more effectively for animal breeding. It was aimed to calculate breeding values for animals by using this software. Additionally, it was aimed to calculate breeding values in terms of milk yield for male animals by using progeny testing (average offspring yield) which otherwise could not be measured by direct methods. Decision support systems, which help to decision making for flock owners and animal breeding persons, have been enhanced by using this software. Decision support systems such as determining of animals to be sold because of old age, determining of offspring that they have unknown father, accurately determining of yields of animals, health managements, determining of culling animals from flock were put into service of user as a tool. Appropriate software SURPRO V1.0 was written by use of Visual basic 6.0 and MsAccess was used as database with this objective in mind.
  M. Olfaz , E. Soydan , H. Onder and N. Ocak
  In order to verify the estrus activity of the Karayaka ewes reared under natural conditions of the Black Sea Region of Turkey throughout year, ten, 3 years-old Karayaka ewes with an average weight of 46±7.9 kg and with two lambing record, were used. In this experiment four climatic seasons were considered; winter, spring, summer and autumn. Behavioral oestrus was monitored twice a day (7: 00 and 15: 00) during all the experiment by using two teasers rams. The oestrus cycles were quantified within each season and classified as short (≤14 days), normal (15-20 days) and long (or anoestrus, ≥21 days). The percentage of ewes in oestrus was higher (p<0.05) in the autumn than in the winter and summer seasons and the percentage never exceeded 40% in each season. The minimum length of short cycle was 11 days while maximum length of anoestrus was 87 days and the average length of normal cycle was 17.3±1.06. During the experiment, there were 11.9% short cycles, 35.8% normal cycles and 52.3% anoestrus. The percentages of abnormal cycles (short and anoestrus), in relation to total cycles monitored in each season were 87.4, 88.5, 90.9 and 35.5% for winter, spring, summer and autumn, respectively. It can be concluded that Karayaka ewes maintained on rangeland show a low seasonality for oestrus behavior. Thus, in this oestrus pattern, mating may occur from late spring through to late autumn taking into account demands for slaughter lambs and/or feeding of lambs in rangeland.
 
 
 
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